The Thunder vs Underworld is a thrilling online casino slot developed by WMS (Williams Interactive), taking players on an epic adventure to the mythical realms of ancient mythology. This 5-reel, 1024-way win video slot invites players demo mode to join forces with Zeus and Hades as they battle for control over the cosmos.

Theme and Design

At first glance, Thunder vs Underworld appears like a classic five-reel design, but upon closer inspection, it reveals itself to be more complex. The game’s atmosphere is set in an underworld filled with smoke-filled caverns, lava flows, and fiery mountainsides, creating an eerie yet mesmerizing environment. Characters from ancient mythology adorn the reels, including Zeus, Hades, Pegasus, Phoenix, and various mythological creatures.

Symbols

The Thunder vs Underworld slot features a mix of low-paying and high-paying symbols:

• Low-value symbols include 10-9 as well as standard suit cards (Hearts, Diamonds, Clubs, Spades).
• High-paying symbols consist of characters from Greek mythology: Zeus the King of Olympus; Hades the Lord of Underworld; Pegasus the Flying Horse; Phoenix, a symbol of rebirth.
• Wild Symbol is represented by the Thunder Bolt icon and can substitute all low-value symbols as well as create additional winning combinations.

Payouts

Thunder vs Underworld follows an average volatility model. Players who wager higher amounts will receive larger payouts but may encounter less frequent wins. Conversely, those betting lower sums might experience more regular winnings with lower payout values. Wins in this game are achieved by collecting five to ten identical symbols on adjacent reels from left to right.

Wilds

The Wild Thunder Bolt is active across all 1024 paylines and can appear anywhere on any of the five reels during free spins or normal gameplay, assisting players in creating winning combinations whenever possible.

Scatters

Symbols representing Hades’ Throne, Lightning Rod, Pegasus, Phoenix, and Zeus’s Throne each hold a special meaning as they serve different roles within the slot game:

• Scatter symbols – If at least two scatter icons are revealed anywhere on adjacent reels from left to right during normal gameplay or free spins, it will pay out multiplied by bet value.
• Triggers – Two scatter icon combinations trigger Free Games feature when playing normally.

Bonus Features

This epic battle between gods comes alive through four unique bonus features triggered at different stages of the game.

• Thunder Bolt Wild Re-spins The triggering combination re-spins the reels until no more wilds are added.

• Hades’ Throne Bonus Round (Pick ‘Em) The player selects a random number from 1 to 20, potentially unlocking an instant win prize or additional free spins with increased multiplier rates applied throughout play session.

• Lightning Rod Free Games 5-6 scatter symbols trigger up to 12 rounds of high-paying gameplay where wins are multiplied by bet value.

• Pegasus’ Wings Bonus Round (Pick ‘Em) Each winning combination during free games offers an opportunity for increased earnings or further bonus opportunities.